Take SQE to see 10 classic anti-wrong cases!【标 精】】

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Take SQE to see 10 classic anti-wrong cases!【标 精】】

2021-11-28 12:03:40 31 ℃

Source | Quality Engineer House

The full text totals 1390 words, you need to read 4 minutes, the following is the text:

Anti-law, Japanese, PKKA-YOKE, also known as stupid, anti-wrong. It is to prevent it before the process mistakes occur. It is a method of adopting automatic role, alarm, logo, classification during the operation, so that the workers do not pay special attention to the way. Let's take a look at the top ten principles of the anti-law.


Breaking root principle

Break root principle: The cause of the mistake will be essentially excluded, so that no errors have occurred. Generally, the wrong mistake is made in a non-symmetrical shape, tool improvement, exclusion. As shown in the figure, the drawing is improved, avoiding the reverse.


Insurance principle

Insurance Principle: It is necessary to work together or sequentially with more than two movements. Generally, the wrong mistake is made in common, order, interaction.

Example: When opening a bank safe, you must use the key of the customer with the key to the bank, and insert the keyhole to open the safe.


Automatic principle

Automatic principle: limits the implementation or not implementation of certain movements in various optical, electrical, mechanics, institutional, chemistry, etc. to avoid errors. These automatic switches are currently very common and very simple "automated". Generally, the wrong mistake is controlled by the control of buoyancy, weight, time, direction.

Example: When the elevator is overloaded, the door is not on, the elevator cannot be up and down, and the warning clock also lifts.


Compilation principle

Phamboction: Whether the sound is in line with the sound, to prevent the occurrence of errors. Generally, different, symbolic indications, quantity indications, sound, etc. to prevent the wrong.

Example: The number of points must be met before and after the opening surgery, so as not to have the tool remain in the human body, forget to take it out.


Sequential principle

Order Principle: Avoid inverting the working order or process before and after the process, can be arranged in the order of numbers, and can reduce or avoid errors. Generally, the wrong mistake is made in number, slash.

Example: Many files are archived in the data cabinet, after each time you look back, then put it back, let go, you can use the slash mark to improve this problem.


Isolation principle

Isolation principle: Use a different area to achieve some regions to cause hazardous or wrong phenomena. The principle of isolation is also known as the principle of protection. If the bad guys caught the prison, the bad items are separated.


Copy principle

Copy principle: The same work, if you need to do more than two times, it is best to use the "copy" way to achieve, save time and not bad. Generally, it will be made by directing, chanting, recording, recitation and other means.

Example: When welding welding, it will be in: "One check (incoming material), second (parts), three press (fixture button), four hits (point), five pine (fixture), six (parts), Seven (to the part storage area).



Level Principle: To avoid making different works wrong, try to distinguish it. Generally, the difference between the rough, different colors represents different significance to prevent the wrong mistake.

Example: Mounts the "red" label to the "red" mark, draw the dangerous area, brush the pedestrian channel to "green".


Warning principle

WARNING Principle: If there is an abnormal phenomenon, various "warning" signals can be displayed in sound or other means to avoid errors.

Example: When the car is too high, the warning light is bright.


Mitigation principle

Mitigation principle: Use various methods to reduce the damage caused by errors, although it cannot be completely excluded, it can reduce its damage.

Example: Car seat belt, riding motorcycle wearing hard hat.

Five ways of preventing anti-wrong mistakes

1. Failure safety device: interlocking order, early warning and interruption, all completion signals, stained workpiece clamping devices, limit mechanical devices.

2. Sensor amplification: visual, smell, hearing, tactile, taste, muscle strength.

3. Redundancy: Multi-confirmation code, redundancy measures, and ratings, review reviews and inspection procedures, verification design, etc.

4. Countdown: The organization reads the data and information processes to keep the wrong procedure parallel.

5. Special inspection, control device: If the computer checks the credit account, the invalid account is rejected, and timely feedback is provided.

Therefore, the anti-missing method is a very embarrassing life and work effective tool, which is a great invention that makes a huge contribution to humans. The incorrect occurrence is not terrible, terrible is the income repeated occurrence.

Confucius's favorite student is color, one of them is "no two". A team, the same error is only allowed to occur; after the error occurs, others must attach great importance to the ring, find out the method (anti-anti-missing method) to solve it!

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Article Editor: Blean